can someone explain to me how they can have no Ki at all and yu are in melee range and they just bust out and shoot a long range attack at u..how do u do this shit its fuckin killin me!

Sometimes when I'm in free battle mode, as soon as I enter melee rage, even if I have no ki at all, I tap the A button and I fly back and fire ki blasts at my opponent. No idea how that works....I'm not complaining...